diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_texture.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_texture.c | 206 |
1 files changed, 103 insertions, 103 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_texture.c b/mesalib/src/gallium/auxiliary/util/u_texture.c index 1e72843f0..d97e57a79 100644 --- a/mesalib/src/gallium/auxiliary/util/u_texture.c +++ b/mesalib/src/gallium/auxiliary/util/u_texture.c @@ -1,103 +1,103 @@ -/**************************************************************************
- *
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * Copyright 2008 VMware, Inc. All rights reserved.
- * Copyright 2009 Marek Olšák <maraeo@gmail.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-/**
- * @file
- * Texture mapping utility functions.
- *
- * @author Brian Paul
- * Marek Olšák
- */
-
-#include "pipe/p_defines.h"
-
-#include "util/u_debug.h"
-#include "util/u_texture.h"
-
-void util_map_texcoords2d_onto_cubemap(unsigned face,
- const float *in_st, unsigned in_stride,
- float *out_str, unsigned out_stride)
-{
- int i;
- float rx, ry, rz;
-
- /* loop over quad verts */
- for (i = 0; i < 4; i++) {
- /* Compute sc = +/-scale and tc = +/-scale.
- * Not +/-1 to avoid cube face selection ambiguity near the edges,
- * though that can still sometimes happen with this scale factor...
- */
- const float scale = 0.9999f;
- const float sc = (2 * in_st[0] - 1) * scale;
- const float tc = (2 * in_st[1] - 1) * scale;
-
- switch (face) {
- case PIPE_TEX_FACE_POS_X:
- rx = 1;
- ry = -tc;
- rz = -sc;
- break;
- case PIPE_TEX_FACE_NEG_X:
- rx = -1;
- ry = -tc;
- rz = sc;
- break;
- case PIPE_TEX_FACE_POS_Y:
- rx = sc;
- ry = 1;
- rz = tc;
- break;
- case PIPE_TEX_FACE_NEG_Y:
- rx = sc;
- ry = -1;
- rz = -tc;
- break;
- case PIPE_TEX_FACE_POS_Z:
- rx = sc;
- ry = -tc;
- rz = 1;
- break;
- case PIPE_TEX_FACE_NEG_Z:
- rx = -sc;
- ry = -tc;
- rz = -1;
- break;
- default:
- rx = ry = rz = 0;
- assert(0);
- }
-
- out_str[0] = rx; /*s*/
- out_str[1] = ry; /*t*/
- out_str[2] = rz; /*r*/
-
- in_st += in_stride;
- out_str += out_stride;
- }
-}
+/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * Copyright 2008 VMware, Inc. All rights reserved. + * Copyright 2009 Marek Olšák <maraeo@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * @file + * Texture mapping utility functions. + * + * @author Brian Paul + * Marek Olšák + */ + +#include "pipe/p_defines.h" + +#include "util/u_debug.h" +#include "util/u_texture.h" + +void util_map_texcoords2d_onto_cubemap(unsigned face, + const float *in_st, unsigned in_stride, + float *out_str, unsigned out_stride) +{ + int i; + float rx, ry, rz; + + /* loop over quad verts */ + for (i = 0; i < 4; i++) { + /* Compute sc = +/-scale and tc = +/-scale. + * Not +/-1 to avoid cube face selection ambiguity near the edges, + * though that can still sometimes happen with this scale factor... + */ + const float scale = 0.9999f; + const float sc = (2 * in_st[0] - 1) * scale; + const float tc = (2 * in_st[1] - 1) * scale; + + switch (face) { + case PIPE_TEX_FACE_POS_X: + rx = 1; + ry = -tc; + rz = -sc; + break; + case PIPE_TEX_FACE_NEG_X: + rx = -1; + ry = -tc; + rz = sc; + break; + case PIPE_TEX_FACE_POS_Y: + rx = sc; + ry = 1; + rz = tc; + break; + case PIPE_TEX_FACE_NEG_Y: + rx = sc; + ry = -1; + rz = -tc; + break; + case PIPE_TEX_FACE_POS_Z: + rx = sc; + ry = -tc; + rz = 1; + break; + case PIPE_TEX_FACE_NEG_Z: + rx = -sc; + ry = -tc; + rz = -1; + break; + default: + rx = ry = rz = 0; + assert(0); + } + + out_str[0] = rx; /*s*/ + out_str[1] = ry; /*t*/ + out_str[2] = rz; /*r*/ + + in_st += in_stride; + out_str += out_stride; + } +} |